FM over South River
FairWarren County, Iowa · 074251704 · Structure no. 000000000333431
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over South River is a prestressed concrete stringer/multi-beam or girder carrying FM over South River in Warren County, Iowa. It was built in 1986, so it is 39 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 100 vehicles a day, projected to reach 100 by 2043. The structure is 142 ft (43.3 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over South River built?
It was built in 1986, making it 39 years old in 2025.
What condition is FM over South River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.
How much traffic does FM over South River carry?
About 100 vehicles per day (2022 count).
How long is FM over South River?
The structure is 142 ft (43.3 m) long with a longest span of 52 ft (15.9 m) and a deck 26 ft wide.
Who owns FM over South River?
It is owned by the County Highway Agency.